Hello all! I have some galvanized sheet metal laying around and was wondering if it would be safe to use for a "mailbox" mod with my AMNPS on my MES30? I have seen that galvanized metal is ok as long as it is kept under a certain temp and I know the chamber would not get hot enough to worry, but what about where the tray sits. Would that get too hot? What could I put down to insulate it? Thanks!